I use the Toodledo iPhone app and notes do not sync, or do not sync correctly.
I tried everything already, including deleting the app and installing it again.
The best way for me to sync notes now is to first purge all data from the iPhone and after that i choose "Force Toodledo.com -> Device sync". But even than the last line of the note is often not synchronised, or for some notes the last word is not synchronised.
I have no problems synchronising tasks. I use iPhone 5 with latest software.